Talking-machine light switch



pril 28, 1925. l

O. LARSEN TALKING MACHINE LIGHT SWITCH Filed Jan. 22, '1921 INVENTOR @mbar-.sen

Patented Apr. 28, 1925.

UNIT-ED `STATES vOSCAR"LARSEN, 0F BROOKLYN, NEW YORK.

TALKING-MACHINE LIGHT SWITCH.

Application 'filed 'January 22, 1921. Serial No. 439,164.

To all whom t may concern.'

'Be `it known 'that 1,'OscAr. LARsnN, a citi zen of the United States` residing' at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful .Improvements in ATalking-Machine `Light Switches, of which lthe following is a specification. A

This invention has relation to sound re-- producing machines, with particular 'reference to the cabinet type having a hinged lid, and has for -an object to vprovide a means of illumination to be located adjacent the turn table, with means for energizing the source of illumination automatically upon the elevation of 'the lid, and to discontinue energization when the lid is closed.

Another object of the invention is to provide an attachment for cabinet talking machines having hinged lid, said attachment be located within the cabinet and having means constituting abrace for the lid to retain the same in an elevated position, said means acting as a circuit closer to completea circuit through a source ot illumination and a source of current to illuminate the turn table and the upper part of ya talking machine.

In addition lto the foregoing this .invention comprehends kimprovements in the details of construction and arrangement of parts to be hereinafter described and particularly set forth in the appended claims.

In the accompanying drawings in which similar and corresponding Iparts are desigvnated by the same characters or' reference throughout the several views in which they appear.

'Figure 1 is a fragmentary view in side elevation of the upper portion oi a cabinet talking =machine illustrated .in dotted lines the embodiment therein of my invention.

Figure 2 is a detail View on an enlarged scale illustrating the mechanism; and

Figure 3 is a verticalsection taken on the line 3-3 of Figure 2.

lVith reference to the drawings, 10 indicates the cabinet of a ltalking machine and 11 a lid hinged at 12 in .the usual manner and having a brace bar 13 which `is pivoted to the lid as at 14. The lower end of the brace bar 13 extends into a. device shown in detail in Figures 2 and 3 and consisting of a pair of spaced plates 15 and 16, having a guide member 1T interposed therebetween, said guide member having a substantially triangular slot -one side of `which is curved as indicated at 18 and the other straight as indicated vat 19, and an inclined upper connecting `portion or groove 20,1the upper wall of said groove 20 having an obstruction 21 located therein substantially7 intermediate the ends of said groove. The lower wallot 'the groove 2O is provided witlra recess 22 in which is mounted part ot a circuit closing mechanism consisting of the base member 23 of insulating material having a pair of spring ingers 21 and 25 mounted thereon, cachot said spring fingers having a projection 26 formed therein, said projections being located opposite each 'other Vand directed toward'each other with theterminals of the spring members 21 and 25 beyond said projections extending in -diverging relation and substantially in alignmentwith the wall of the slot 20 so as to provide'contigurations thereof. A lateral projection 27 is mounted upon the lower end of the brace bar 13 said projection 27 having a pairotl recesses 28 in its side adapted to yreceive 'the projection 26 of the spring fingers. Mounted upon the lower end of said member 27 is a strip 'of insulating material 29 for a purpose to be ypresently noted. I 'provide upon the upper surface of the talkingmachine adjacent the turn table an incandescent `bulb 30, one terminal of which is connected by means vot the lead 31 to the spring fingerQ, and the other terminal of 'the bulb connected by means of the lead 32to the spring liinger 24. Intel-posed in said lead 32 is a sourceot current 33. c

Then the lid 11 is in a lowered position as shown in dotted lines in Figure 1 it will be observed that the brace bar 13 hangs substantially lvertically and the projection 27 will be inthe lower end of the triangular groove or substantially at the junction of the grooves 18 and 19, said projection however lying more inthe groove l19 than in the groove 18. As a result of this position when the `lid 11 is elevated the projection 2T will ride upwardly within the groove 19 and will then be directed into the groove 20, impending upon 'the projection 21 which 'will cause the brace bar l13 to be directed downward slightly and when in this position by lowering the lid 11 the projection 27 may be inserted between the spring ngers 2a and 25, thus completing the circuit through the leads 31 and 32, the bulb 30 and the source of current 33. The incandescent lamp will then be illuminated and permit the record interchanged. By'elevating the lid 1l the projection 27 will kbe disengaged from the spring fingers 24 and 25 and strik? ing the obstruction 2l will be directed into the channel again and will ride along the same until the projection arrives abovethe upper end of the groove 18. By lowering the lid the brace bar will be disposed again in its linitial position as shownin dotted lines in ,Figure l. The circuit will thus be broken. It will be observed thatV owing to the configuration of the projection 27and the spring fingers 24C and 25 in conjunction with lthe strip of insulating material 29 the circuit will be quickly broken when the projection 27 is withdrawn from betweenthe spring fingers, thus preventing the formaytion of an arc.' v

Thus it willy beseen thatI have `provided a novel device which may be embodied in talking machines of practically any type,

Ithe upper' end o the plate l5 having a iiat plate portion 3,4 formed therein which is adapted to be secured to the' top wall of the talking machine by means of screws and is provided with a" slot through whichA the brace" bar `13 operates. Owing to this' arrangement a source of illumination is provided automaticallyv at;v times when the same is requiredv without eXtra attention.

Furthermore the embodiment of the apparatus in the talking machine does not detract from the appearance thereof in any Other useful advantages will readily occur kto those familiar with the art i ,tov which this invention appertains.

While I have illustrated and described my invention with some degree of particularity I realize that in practice various alterations therein may be made. 'I` therefore reserve the right and privilege of changing the form of the details' of construction or otherwise altering the arrangementof the correlated partsV without departing from the spirit of the invention or the scope of the appended `United States `Letters Patent is :El l

l. An attachment for talking machines comprising a plate having a. substantially i horizontal groove therein, the lower wall of the groove being recessed, a support of insulated material received in the lower portion of said recess, ka'pair of spring Contact fingers mounted on said support and having their terminals extended into the upper portion of the recess'toform al continuation of j the walls of the recess, a brace member forv attachment to the lid of the talking machine,

ber and adapted to travel in saidtriangular groove, and a pair of spaced "contact members arranged in said recess to be bridged by the position.

projection of said bracein one An .attachment for talking machines,A comprising a pair ofspaced plates arranged in a vvertical position in a ytalking machine cabinet, a guide plate arranged against one of said first named plates and spaced from the other, said guide plate being provided slot, one wall of the slot being' provided with -a recess, a pairvo spaced contact members arranged in said recess, a brace member vwith a substantially triangular continuousl pivotally connected to a lid of a talkingrmay chine and adapted for engagement between thel guide plate and one of the iirst men-4 tioned plates, and a projection on the brace member ladapted for travel in said slot of the guide plate and for engagement with the spaced contact members.` e

t., An attachment fortalking machines comprising a plate having a lateral triangular grooveV and the inner wall of the groove recessed a support of insulated material in said recess, a pair of vspring fingers mounted on said insulating `material' and having their terminals bent to form a continuation of the recessed wall, a brace inember for attachment tothe lid,v and a metallic 'projection extending laterally of the brace member adapted to ride in thegroove and to vengage between the contact fingers toy create electrical connection therebetween.

In testimony whereof I aiiix my signature in presence of two witnesses. v

OSCAR LARSEN. [1.. s] Witnesses:

CHARLES J. PFEIFFER, BEATRICE DUNKENBERGER. 

